She was appalled by West Egg, this unprecedented "place" that Broadway had begotten upon a Long Island fishing village — appalled by its raw vigor that chafed under the old euphemisms and by the too obtrusive fate that herded its inhabitants along a short-cut from nothing to nothing.

There are no more uses of "vigor" in the book.

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And we ourselves assembled here today, who are still most of us in the vigor of life, have carried the work of improvement further, and have richly endowed our city with all things, so that she is sufficient for herself both in peace and war.

Thucydides -- Pericles’s Funeral Oration

A group of loudmouthed white-haired old ladies, each trying to talk over the next, a few of them texting, the kind of elderly people who have a baffling amount of energy, so much youthful vigor you had to wonder if they were trying to rub it in.